Error handling performance of a token ring LAN

The authors review the key error recovery mechanisms of the ISO 8802/5 token-ring protocol. An analysis and evaluation which has been supported by an experimental investigation revealed that recovery times range from values of a few milliseconds up to a number of seconds. It is concluded that an appropriate reevaluation of present timer settings adapted to specific communication requirements in manufacturing systems can lead to increased recovery performance. In the case of backbone-ring interruptions there is no automatic recovery specified at the moment. The results are pertinent to the application of local area networks in the manufacturing environment.<
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